Write an empty response to clients

main.c

@@ -142,8 +142,17 @@ int main(int argc, char *argv[])
 			goto close_client_socket;
 		}
 
-		sbuf[slen] = '\0';
-		printf("Received selector: \"%s\"\n", sbuf);
+		/*
+		 * Write an empty response to the client.
+		 */
+		do {
+			errno = 0;
+			n = write(cfd, ".\r\n", 3);
+		} while (errno == EINTR);
+		if (n == -1) {
+			fprintf(stderr, "Error sending response to client\n");
+			goto close_client_socket;
+		}
 
 	close_client_socket:
 		close(cfd);